I've had a pistol/goby pair for about a year. He will "click" at night sometimes. A pistol shrimp wouldn't go after a fish as far as I know. They would go after a shrimp like a cleaner or peppermint. Investigate your tank with a flashlight after lights out and see what you find. Although my pistol will poke his head out during the day and stay hidden all night.
HTH
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Last edited by MikeP; 08-11-2008 at 07:43 PM.
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